One from The Hippopotamus (novel by Stephen Fry): there's a scene involving an emergency visit to a hospital in Norwich, which the narrator imagines caters mainly to local "bumpkins". I've seen a published and paperbacked German translation that manages to render this as "Kürbisse".

Another one I remember at least has the excuse of difficult conditions: In the first Dirk Gently novel by Douglas Adams, the eponymous hero gets distracted by something on TV and tries to say "hang on a moment". However, owing to his just having had his nose broken, this comes out as "hag od a bobed". The German outcome is something like "Hang oder ich hoffte". #deadline, I suppose.